The eye relief of this eyepiece makes it a pleasure to use.  It is nice not having to take my glasses off.  It is sharp across the whole field of view. It seems just as sharp as a 9mm ortho I had.  

From: | Created on: 10/16/2009 1:48:45 PM

About as good as a 10mm eyepiece can get. Excellent sharpness, contrast, fov, and eye relief. Some chromatic aberration evident at extreme edge of field but since I always observe in the center of the field, not an issue for me. Sliding eyecup easily adjusted to make it tighter which is the way I prefer it. Uncle Al really hit a home run with the entire Radian line.

From: | Created on: 10/16/2009 1:48:37 PM